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Manley 11843-8 Severe Duty 1.880'' Exhaust Valves For Big Block Chevy

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MSRP: $382.30
$290.54
(You save $91.76 )
SKU:
MAN11843-8
UPC:
807298053837
Condition:
New
Current Stock:
7
MPN:
11843-8
5 customers are viewing this product
Manley 11843-8 Severe Duty 1.880'' Exhaust Valves For Big Block Chevy

Manley 11843-8 Severe Duty 1.880'' Exhaust Valves For Big Block Chevy

MSRP: $382.30
$290.54
(You save $91.76 )
Fitment and Product Information:

Manley 11843-8 Severe Duty Series Exhaust Valve Kit 1.880 in. Head Diameter 5.422 in. Overall Length For Chevy Big Block

Product Details:
  • Brand: Manley Performance
  • Part Number: 11843-8
  • UPC: 807298053837

    Product Features and Description:

    Short Description:

    Discover the pinnacle of performance and racing excellence with Manley's Severe Duty? Valves. Exhaust valves crafted from XH-428 material and Intake valves from NK-844 material, these valves stand as a testament to our unwavering commitment to superiority in the industry. Severe Duty? Valves outshine the competition in every aspect.

    Features:

    • Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20, 000 to 25, 000 lbs of applied stress. When valves bounce on the seat, this stress soars to 40, 000 to 60, 000 lbs. Manley exhaust valves, tested at 40, 000 psi and 1400?F, impressively endured up to 100, 000, 000 (one hundred million) cycles. In contrast, competitors' offerings failed after just 100, 000 cycles, showcasing a staggering 1000 times better fatigue life.
    • Designed for High Temperature Gasoline Engines: Engineered for superior performance in high-temperature gasoline engines.
    • Chrome Stems and Hard Tips: Incorporating chrome stems and hard tips for enhanced durability and longevity.
    • Optimized Combustion: Swirl polished under head areas and fully machined combustion faces for improved airflow and combustion efficiency.
    • XH-428 for Exhaust: No competitor worldwide offers the exceptional XH-428 as exhaust valve material. It boasts nearly double the ultimate tensile strength at 1500?F compared to the competition's EV-8.
    • NK-844 for Intake: Our intake valve material, NK-844, is equally unmatched, displaying over four times the ultimate tensile strength of the competition's best intake valve material at 1000?F.
  • Specifications:

    • Category Hierarchy: Valves>Stainless Steel>Severe Duty
    • Engine: Big Block
    • Engine - Web: Big Block
    • Engine Detail - Web: Big Block
    • Engine Family: Big Block
    • Engine Type: ICE
    • Head Diameter: 1.88 inch
    • Make: Chevrolet
    • Make - Web: Chevrolet
    • Margin Width: 0.075 inch
    • Overall Length Length: 5.422 inch
    • Product Type: Engine Exhaust Valve Kit
    • Seat Width: 0.085 inch
    • Stem Diameter: 0.3415 inch
    • Tip Length: 0.25 inch
    • Top of Head: 6 Degree Dish
    • Underhead Angle: 10 Degree
    • Underhead Radius: 3/8 Inch
    • Valve Quantity: 8
    • Valve Series: Severe Duty? Series
    • Valve Type: Exhaust


    Fitment and Important Notes About this Product:

    Application Summary:

    • Chevy Big Block


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    Prop 65 Warning WARNING: This product can expose you to chemicals including Styrene, which is known to the State of California to cause cancer. For more information go to www.P65Warnings.ca.gov

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